MinecraftBut

Explosion : Spawn TNT arouns the player at a random Y.

SandRain : Sand and gravel fall around the player.

LavaFloor : Spawn Lava on the ground around the player.

Apocalypse : Do random events when the player walks

RandomTP : Players can be teleport when they move, craft, use an item, place a block, or drop an item.

RandomCraft : Give a random item when a player craft something. Warning : It works with smithing tables too. The number of items crafted is kept (ex: if you craft torches it will gives you 4 random items)

RandomMob : Summon random mobs on the player when he is walking.

The radius and the probabilities (for a tnt to spawn, a sand to fall) are customisable ingame or in the config file.

Falling Ground : the ground around the player will fall if there is a cave or air below.

Comming Soon :
Crafting "structure spawn eggs"